Adding-machine.



J. G. VINCENT.

ADDING MACHINE.

APPLICATION FILED SEPT. 9,1907.

Patented June 29, 1909.

7 SHBETS-SHEET 1.

J. G. VINCENT.

' DDING MAG APP ATION FILED S Patented June 29, 1909.

' ISHEETS-SHEBT 2.

J. G'. VINCENT.

ADDING MACHINE. APPLIOATION FILED sBPT.9,1907.

92.6, 1 5 1 Patented June 29, 1909.

7 SHEETS-SHEET 3.

J. G. VINCENT.

ADDING MAGHLNE.

- APPLIUATION FILED sn1 T s,19o7. 926, 1 5 1 Patented June 29, 1909.

' '1 SHEETS-SHEET 4.

L. I. 41 y e. WEE:Y

J'. G. VINCENT.

ADDING MACHINE.

APPLICATION FILED m9191907.

Patented June 99, 1909.

7 SHEETS-SHEET 5.

#an i @A J. G. VINCENT.

ADDING MACHINE.

w Mw@ @WM J. Gf. VINCENT.

ADDING MACHINE.

7 SHEETS-SHEET 7.

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, UNITED 'sTATEs PATENT OEEIOE.

JEssE G. VINCENT, or DETROIT, MICHIGAN, AssIGN OR To BURROU'GHS ADDING MACHINE COMPANY, or DETROIT, MICHIGAN, A CORPORATION OF MIoIIIGAN.

ADDING-MACHINE.

Specification oi*- Letters Patent.

Patented June 29, 1909.

Application led September 9, 1907. Serial No. 391,928.

To all whom 'it may concern: g Be it known that I, JESSE G. VINCENT, a l citizen of the United States, residing at De- I troit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Adding-Machines, of which the following is a specificationf The present invention relates to that class of adding machines in which the mechanism is caused to operate to do the adding by the mere act of touching or depressing a selected key or keys representing the amount to= be added. In other words, the keys do not merely set certain stops which regulate the extent of movement of parts when. an operation is thereafter performed, as for example by the drawing forward of a handle lever, but the touching or depres, sion of keysk immediately 4results in a oomplete operation of the machine.

One object of the invention is to provide a form of mechanism which will properly respond to depression of keys under the most speedy manipulation or play of the keyboard.

Another object is to relieve the k'eys themselves of all work in the matter of effecting adding movements of the mechanism, so. that finger pressure is not relied upon in this regard and the keyboard will have an extremely l-ight touch which promotes speed of operation.

A further object of the invention is to provide a reliable form of transfer or carrying mechanism by which the additional increment of movement of a Wheel Of higher denomination can accompany movement of such wheel in response to depression of a key in its own bank.

A still further object of the invention is to lprovide for clearing the mechanism or setting all the number' wheels at zero by the simple touch or depression of a special key.

Vtith these and incidental objects in view the invention consists in certain novel -fea- .tures of construction and combinations of parts, the essential elements whereof are recited in the appended claims and a preferred form of' embodiment of which is described in detail hereinafter and fully illustrated in the accompanying drawings forming a part of this specification. f

Qf said drawings Figure 1 represents the complete improved mechanism in rightside elevation, the inclosing casing appearing in section as wellas cert-ain siupporting shafts and a bed plate; Fig. 2 represents a partial top .plan view of the machine with a portion of the casing broken away to disclose interior parts, some of which appear in horizontal section; Fig. 3 is a more extended horizontal section corresponding with that portion of Fig. 2 in which parts appear in section; Fig. 4 is a cross-section on the lines 1- 4; of Fig. 3; Fig. 5 1is a vertical cross- .section on the lines 5 5 of Fig. l; Fig. 6

able inclosing casing through sight openings l 3 in the front of the elevated rear portion of which the numbers may be read singly upon a series of register Wheels 4. Through the sloping top of the forwardly extending portion of the casing protrude key stems 5 sur? mounted by suitably inscribed buttons (5, the latter being as usual numberedfrom l to 9 and in the present instance illustrated (see Fig. 2) as also inscribed with complemental numbers for use in subtraction. The key stems are arranged to slide up and down the slots of the casing top and slots of a bed plate 7 suitably supported within the casing and said key stems are normally upheld v suitable springs 8. The stems of a bank-or row of keys are preferably offset alternately as shown in Figs. 3 and et so that they stand in staggered relation to each other on Opposite sides of a horizontally arranged slide bar 9, there being one of these slide bars for each row or bank of keys. Portions of each slide bar are struck up first on one side and then on the other to form stop projections 10. to contact with the keys' respectively. r:Phe sides of the key stems facing the slide bar are channeled as shown atll to permit the free passage of said stop projections but when any key stem is moved down by finger pressure on its button a portion of the stem is carried in front of the nearest stop projection pointing towardvit, The stop pro- 4 tage of shortening the row of keys. The' key stems are notched as shown at 12 in sides opposite those in which the channels 11 are formed, these notches coperating with detent plates 13 hinged upon standards 14 which rise from the bed plate 7 and are pressed by springs 15 into engagement with the key stems. Thus when any key is.de pressed it is caught and held down by the engagement of the associated detent plate 13 with the notch 12. As will hereinafter' be explained the slide bar is driven forward `upon depression of a key and corresponding movement transmitted to the associated number wheel 4. As the slide bar when thus driven forward contacts with the depressed key stem the latter is released by the displacement of the detent plate 13. To this end the latter is formed with a rearwardly and downwardly extending finger 16 Fig. 1) having a laterally inclined, lug 17 Fig. 3) against which the stop projection 10 acts I as it approaches the depressed key stem.

Each slide bar 9 is permitted vertical vibration as well as longitudinal movement,

said bar at its forward end having oppo' sitely projecting studs 18 which normally seat in notches of uprights 19 on the bed plate 7 as shown in'Fig. 1. For ease of op,- eration the bar is mounted between a pair of grooved rollers 20 turning on cross-rods supported by said uprights. At the rear each slide bar is formed as a rectangular frame, the upper side of which constitutes a rack 21 for coperation with a gear wheel 22 for transmitting movement to the number wheel 4. Normally the rack is disengaged from the gear wheel as shown in Fig. 1 but the depression of any key in the associated bank raises the rack into mesh with the wheel. To this end a pair of-bell cranks 23 embrace the slide bar carrying between them a roller 24 occupying the longitudinal slot provided by the open center of the rectangular framelike portion of. the bar. These bell cranks are pivoted upon a cross-rod 25 and their upstanding portions are jointed to a horizontally-extending strip or bar 26 which at its forward end is jointed toJ upstanding arms of a pair of bell cranks 28. The forwardly extending arms of the latter are normally upheld by a spring 29 which thus tends to lower the rear end of the slide bar 9 whose weight ofcourse also tends to keep it in lowered position. The strip or bar 26 extends adjacent the key stems and carries a stud 30 for coperation with each stem. The stems are formed with cam edges 31 so that upon depression of any key the strip or bar 26 will be moved forward by reason of the action of such cam edge upon the stud 30. Such forward movement of such` strip or bar necessarily swings the uprightl arms ofthe bell cranks 23 and 28 forwardly and the consequent upward swing of the rearwardly extending arms of the former raises the rack 21 into mesh with the gear wheel 22.

Each gear wheel 22 carries a drum 32 containing a coiled spring 33 secured to a shaft 3i, which when the machine is in use constantly rotates in a direction to wind up the springs. The latter are in frictional contact at their outer ends with the interior surfaces of their respective drums 32 and with the wheels 22 unrestrained the motion of the shaft 34 will be transmitted to said wheels throughthe medium jof said springs. However, each gear wheel 22 has. formed with or secured to it a ratchet wheel 35 and lthe ratchet wheels are normally engaged by pawls 36 pivoted upon a cross-rod 37 and connected by links 38 with the pairs of bell cranks 23, respectively. So long as 'a rack bar is in its lowered position out of mesh with the associated gear wheel 22 the pawl i remains in engagement with the ratchet wheel and prevents turning of the gear wheel, the spring 33 simply slipping on the interior surface of the drum.Y However, it will be recalled that upon depression of a key the bell cranks 23 are vibrated. Thusy the upward movement of the rearwardly extending arms of such bell cranks by elevating the forwardly extending arm of the pawl will disengage the rearwardly extending portion thereof from the ratchet wheel. When this takes place the rack 21 will have been brought into mesh with the gear wheel 22 and consequently the movement of the latter is transmitted to the rack and limited by the abutment of the latter against the depressed key. It will also be remembered that as the stop projection of the rack bar approaches the depressed key stem the detent of the latter is displaced and the key rises. The rise of the key permits the spring s 29 to restore the bell cranks 23 to normal position and throw the pawl 36 into engagement with the ratchet wheel. Hence no movement of the gear wheel will take place A except when in mesh with the rack. The latter is normally held in its rearward position by a spring 27 and upon its disengagement from the gear wheel after measuring the movement thereof said spring draws the rack bar back to its normal position. Passing now to the register or counter'proper a supporting shaft 40 extends from side to side of the casingvand the number wheels 4 are loosely jourualed thereon. These number wheels are connected with each other and with the gears 22 by differential gearmg. shaft 41 carrying a bevel pinion 42 and the latter meshes with a bevel gear 43 journaled on the shaft 40 and carrying a spur pinion 44 in mesh with the associated gear wheel 22. The bevel pinion 42 of the units number wheel meshes with affixed bevel gear 45 on one of the upright-s of the supporting framework as shown in Fig. 5. Each of the bevel pinions 42 of the other number wheels meshes with a bevel gear 4G loosely journaled onv the shaft 40 and carrying a ratchet wheel 47. It will be obvious that with the bevel gears 46 held stationary transmission of movement from the other gear wheels 22 to their associated number wheels will be accomplished exactly the same as transmission of movement from the right-hand gear wheel 22 to the units number wheel. However, when the units wheel has registered up to its capacity it should of course carry one to the next higher wheel and that wheel should transfer to the next and so on. This is the purpose of the differential gearing above described, it being apparent that by advancing any one of the bevel gears 46 the associated number wheel will be moved farther than if said bevel gear remained stationary and that such advance of said bevel gear can take place siniultaneously with movement of the number wheel by its gear wheel 22.

In the present instance each number wheel is inscribed with two alined rows of numerals from l to 9 with intervening zeros. Consequently upon the completion of a half rotation of a number wheel it should transfer or carry l to the next higher wheel. The gearing above described is so proportioned and the ratchet wheels 47 so constructed that the turning of any one of the latter the extent of a single tooth will advance the associated number wheel one step. Each number wheel except the one farthest to the left carries on its side next the adjacent wheel of higher order a cam disk 48 having two cam rises co-acting with a roller 49 on an arm 50 pivotally supported by a cross-shaft or rod 5l and held in engagement with the'r cam disk by a spring 50a. This arm 50 carries at its forward end a pivoted pawl 52 pressed by a spring into engagement with the ratchet wheel 47 of the next number wheel to the left. It will be lseen that as the number wheel of lower order turns one of the cam rises of the disk 48 will elevate the arm 50 against the stress of its spring and when the highest point of the cam rise passes the roller/49 the spring` 5()a will return said arm to its lower position. The elevation of the arm by the cam rise is sufficient to carry the Thus each number wheel has a radial pawl 52 backwardly over one of the ratchet teeth and permit it to drop behind such tooth Vso that when the arm 50 lowers the ratchet wheel will be advanced and the trans` ferv elt'ect heretofore described thereupon produced.

It is of course essential that the bevel gears Zl-t shall be definitely controlled and therefore precautions are taken to preventauy possible retrograde movement thereof or any advance except as actuated by the pawls 52. To this end restraining pawls 54 are pivoted upon the shaft. 5l and drawn by springs 55 into engagement with the ratchets 47 respectively. The engagement of these pawls with the ratchets is such as to prevent any retrograde lnovement thereof and they are 4also availed of to prevent anyr advance of the ratchets except as actuated by the pawls 52. To this end tie-plates 56 are mounted upon the shaft 40, being longitudinally slotted as shown at 57 for suitable play in the direction of the diameters of the number wheels. Each tie-plate connects a pawl 52 with a pawl 54, the lower end of the tieplate being' longitudinally slotted on a slight angle as shown at 5S to embrace a headed stud 59 on the pawl 54 and the upper end of the tie-plate being enlarged and slotted in the arc of a circle as shown at G0 to embrace a headed stud (il on the pawl 52. The' slot 60 provides for the reciprocation of the pawl 52 required to actuate the ratchet 4l and the slots 57 and 58 provide for movement of the tie-plate with said pawl 52 as the latter rises in riding over the backs of the ratchet teeth but this movement of the tie-plate results in locking the pawl 54 to the ratchet Wheel. Of course forward turning of t-he ratchet wheel cannot take place unless the pawl 54 is free to move down wardly and it can move downwardly far enough to permit a tooth of the ratchet wheel to pass it, only when the tie-plate 56 is in its lowered position permitting the stud 59 to move the length of the slot 58. lVhen the pawl 52 drops in behind a ratchet -tooth the tie-plate returns to its normal position land then as the pawl 52 advances the pawl 54 retreats and permits the ratchet tooth against which it is bearing to pass by.

Passing now to the means for turning the register or counter to zero a special key is provided in the form of a lever preferably located at the right-hand side of the machine as shown in Fig. 2 and secured to a shaft 71 extending across the machine and equipped with a series of upstanding arms 72, one for each of the strips or bars 26 and adapted when the key is depressed and the shaft rocked to thrust said strips or bars forwardly the same as though they were acted upon bydepression of amount keys. This of course has the effect of moving the racks 2l into mesh with their respective gear wheels 22. Now the right-hand units 'number wheel may be moved directly to zero position but this would not do with reference to the other number wheels because the inevitableA transfer movements would carry such wheels beyond and they would not be left at zero. Consequently the depression of .the special key, while directly resulting in advance of the units wheel to Zero position, limits advance of the other' wheels to positions where they would exhibit a row of 9s so far as transmission of movement by their gear wheels 22 is concerned. But 'the advance of the units wheel to zero of course results in carrying one to the 10s wheel so that the latter will move on to zero position and in so doing cause the carrying of one to the next wheel and so on. For the purpose of properly limiting the Zero-setting movements of the number wheels as directly produced by their respective gear wheels 22,

the shaft. 71 has secured to it a series of stop.

arms, one for each number wheel, the righthand arm 75 being slightly longerthan the other arms 76 so that its hooked rear end 77, projected in the path of a stud 78 on the units Wheel, will permit advance of the latter to the z\ero position. The hooked rear ends 79 of the shorter arm 6 when pro-v jected in the paths of similar studs on the other number wheels limits their movement vto one step short of zero position. The arms 75 and 76 are of course normally lowered so that the hooks 77 and 79 are entirely out of the paths of studs 78. The depression of the key in rocking the shaft 71 lifts the arms -7 5 and 7 6 to the positions shown in Figs. 7

and 8, where their hooked rear ends are represented as abutments for the stud 78 to encounter.

It may happen that the units wheel is already standing at Zero when the clearing key is depressed. In such case there would of course be nomovement of said wheel and consequently the usual transfer operation resulting from movement of that wheel to zero would not take place. To provide against such a contingency the transfer pawl 50 vassociated with this particular wheel is connected by a link`80 with a crank arm 81 secured to the shaft 71. Through these connections the transfer pawl will be caused to operate by the act of depressing the clearin key, the same as advanced to the zero position instead of already standing at that position.

It will of course be understood that the clearing key must be released in order to permit the transfer movements of the wheels to take place, such movements Aoccurring when the gear wheels 22 are locked as well as when the same are unlocked.

Continuous rotation of the shaft 34 may be produced any'suitable manner. -In 'instance a worm-wheel 82 is 'ously limiting the resultant advance though the umts wheel ha ymovement of said rack bar,

shown rotatively connected with said shaft and engaged by ,a worm 83 (Fig. 9) on a shaft 84 geared to an electric motor 85, the latter having a suitable on-and-oif switch 86. Such a -motor can conveniently be located in rear rof the casing 2 as shown in Fig. 9.

Vhat is claimed is:

1. In a machine of the character described, the combination of a register wheel, a continuously rotating shaft, means interposed between the same and the register wheel constantly tending to advance the latter but normally restrained from so doing, said means including` an element deriving motion ldirectly from the shaft and keys for removing such restraint and variously limiting the resultant advance of the said element.

2. In a machine of the character described, the combination of a register wheel, a gear engaged therewith, a. continuously rotating shaft, a spring tensioned by said shaft and tending to advance said register wheel but normally restrained from so doing, and keys for removing such restraint and variof the register wheel.

3. Inamachine of the character described, the combination of a register wheel, a continuously rotating shaft, a gear loosely mounted thereon, a spring connected with the shaft and frictionally engaged with the said gear, means normally restraining the latter, and keys for disabling said means I.and variously limiting `the resultant advance of the register wheel.

4. In amachine of the character described, the combination of a register wheel, a gear engaged therewith, a. continuously rotating shaft, a spring tensioned by said shaft and tending to advance said register wheel, means normally restraining said gear, a rack bar normally disenga ed from the gear, and keys adapted to disable said restraining means, engage the rack bar with the gear movement of said rack bar, the gear and the register wheel.

5. In amachine of the character described, the combination of a register wheel, a continuously rotating shaft, a gear loosely mounted thereon, a spring connected with the shaft and frictionally engaged with the said gear, means normally restraining the latter, a rack bar normally disengaged from the gear, and keys. adapted to disable said restraining means, engage the rack bar with the gear, and variously limit the resultant the gear and the register wheel.

6. In amachine of the character described, the combination of a register wheel, a gear engaged therewith, a continuously rotatino' shaft, a spring tensioned by said shaft an tending to advance f said register wheel,

and variously limit the resultant v porarily l the combination of mounted thereon, a

means nornially restraining said gear. a rackv bar normally disengaged from thel gear, depressible keys adapted to disable said restraining means engage the rack lia r with the gear and variously limit the resultant movement of said rack bar, the gear and the register wheel, and temporarily holding the keys with provisions for the rack bar.

7. Ina machine of the characterdescribed the combination of a register wheel, a continuously rotating shaft, a gear loosely mounted thereon, a spring connected wit-li the shaft and frictioiially engaged ivith the said gear, means normally1 restraining the latter, a rack bar normally disengaged from the gear, depressible keys adapted to disable depressed, disabling any detent by said restraining means, engage the rack bar with the gear and variously limit the resultant movement of said rack bar, the gear and the register wheel, and detents for temliolding the keys depressed, with provisions for disabling any detent by the rack bar.

8. In a machine of the character described, the combination of a register wheel, a gear engaged,thereavitli, a continuously rotating shaft. a spring tensioned by said shaft and tending to advance said register Wheel, means normally restraining said gear, a rack bar normally disengaged from the gear, depressible keys\ adapted to disable said restraining means,- engage the rack bai' with the gear and variously limit the resultant movement of said rack bar, the geai' and the register wheel, detents for temporarily holding .the keys depressed, with provisions for disabling any detent by the rack bar,` and means for restoring` the rack bar to normal after disengagement from the gear by the restoration of the depressed key.

9. In a machine of the character described,

a register wheel, a consliaft, a gear loosely .Spring connected with the shaft and frictionally engaged Wit-h the said gear, means normallyrestraining the latter, a rack bar normally disengaged from the gear, depressible keys adapted to disable said restraining means, engage the rack bar with the gear and variously limit the resultant movement of said rack bar, the gear and tiiiiiously rotating the register Wheel, detents for temporarily holding the keys depressed, with provisions for disabling' any detent bythe rack bar, and means for restoring the rack bar to 4normal after disengagement from the gear bythe restoration of the depressed key.

10. In a machine of the character described, the combination of a register Wheel, a gear engaged therewith, a continuously r0- tating shaft, a spring tensioned by said shaft and tending to advance said register Wheel, meansl normally restraining said gear, a rack detents for' 'porarily bar normally disengaged from the gear, .de- -pressible spring-upheld keys adapted to disable said restraining means, engage the rack bar with the gear and variously limit the resultant movement of said rack bar, the gear and the register Wheel. and detents for teinholding the keys depressed,vwith provisions for disabling any detent by the rack bar.

11. In a machine of the character described, the combination of a. register Wheel, a continuously rotating shaft, a gear loosely mounted thereon, a spring connected With the shaft and frietionally engaged with the said` gear, means normally restraining the latter, a rac t bar normally disengaged from the gear, depressible spring-upheld keys adapted to disable said restraining means, engage the rack bar With the gear and variously-limit the resultant movement of said rack bar, the gear and .the register Wheel, and

detents for temporarily holding the keys dei pressed, with provisions for disabling any detent by the rack bar.

l2. In a machine of the character described, tlie combination of a register Wheel, a gear engaged therewith, a continuously rotating shaft, a spring tensioned by said shaft and tending to advance said register Wheel, means normally restraining said bar normally disengaged from the gear, depressible spring-upheld keys adapted to disable said restraining means, engage the rack bar with the gear and variously limit the resultantv movement ofsaid rack bar, the gear and the register Wheel, detents for temporarily holding the keys depressed, with provisions for disabling any detent by the rack bar, and means for restoring the rack bar to normal after disengagement from the gear by the restoration of the depressed key.

12. In a machine of the character described, tlie combination of a register Wheel, a continuously rotating shaft, a gear loosely mounted thereon, a spring connected with the shaft and frictionally engaged with the said gear, means normally restraining the latter, a rack bar normally disengaged from the gear, depressible springupheld keys adapted to disable said restraining means, engage the rack bar with the gear and variously limit the resultant movement of said rack tar, the gear and the register Wheel, detents for temporarily holding the keys depressed, With provisions for disabling any detent by the rack bar, and means for restoring the rack bar to normal after disengagement from the gear by the restoration of the depressed key.

14. In a machine of the character described, the combination of a register Wheel, a gear engaged thereyvith, a continuously r o tatiiig shaft, a spring tensioned by said shaft. and tending to advance said register' wheel, means normally restraining said gear, a rack gear, a rack bar normally disengaged from the gear, depressible keys adapted to disable said restraining means, engage the rack bar with the gear and variously limit the resultant movement of said rack bar, the gear and the register Wheel, detents for temporarily holding the keys depressed, with provisions for disabling any detent by the rack bar, and a spring for restoring the rack bar to normal after disengagement from the gear by the restoration of the depressed key.

15. In a machine of the character described, the combination of a register Wheel, a gea-r engaged therewith, a continuously rotating shaft, a spring tensioned by said shaft s and tending to advance said register Wheel, means normally restraining said gear, a rack bar normally disengaged from the gear, depressible spring-upheld keys adapted to disable said restrainingieans, engage the rack bar With the gear and variously limit the resultant movement of said rack bar, the gear and the register Wheel, detents for temporarily holding the keys depressed, with provisions for disabling any detent by the rack bar, and a spring for restoring the rack bar to normal after disengagement from the gear by the restoration of the depressed kev.

'16. In a machine of the character described, the combination of a register Wheel, a continuously rotating shaft, a gear loosely mounted thereon, a spring connected with the shaft and frictionally engaged with the said gear, means normally restraining the latter, a rack bar normally disengaged from the gear, depressible springupheld keys adapted to disable said restraining means, engage the rack bar With the gear and variously limit the resultant movement of said rack bar, the gear and the register Wheel, fdetents for temporarily holding the keys depressed, with provisions for disabling any detent by the rack bar, and a spring for restoring the rack bar to normal after disengagement from the gear by the restoration of the depressed key.

17. In a machine of the character described, the combination of a register wheel, a gear engaged therewith, a continuously rotating shaft, a spring tensioned by said shaft and tending to advance said register wheel, a ratcheton the latter, a pawl normally en-v gaging saidv ratchet to restrain the spring, and keys for displacing the pawl and variously limiting the resultant advance of the register Wheel.

18. In ,a machine of the? character scribed, the combination of a register Wheel, a continuously rotating shaft, a gear loosely mounted thereon, a spring connected with the shaft and frictionally 'engaged with the said gear, a ratchet on the latter, a pawl normally engaging said ratchet to restrain the spring, and keys for ydisplacing the pawl rarily holding the keys depressed, with proand variously limiting the resultant advance of the register Wheel.

19. In a machine of the character described, the combination of a register wheel,

a gear engaged therewith, a continuously rotating shaft, a spring tensioned by said shaft and tending to advance said register wheel, l a ratchet on the latter, a pawl normally entgaging said ratchet to restrain the spring, a rack bar normally disengaged from the gear, and keys adapted to displace said paWl, engage the rack bar With the gear and variously limit the resultant advance of the register Wheel. .Y

20. In a machine of the character described, the combination of a register wheel, a continuously rotating shaft, a gear loosely mounted thereon, a spring connected with the shaft and frictionally engaged With the said gear, a ratchet on the latter, a pawl normally engaging said ratchet to restrain the spring,a rack bar normally disengaged from the gear, and keys adapted to displace said paWl, engage the rack bar With the gear I and variously limit the resultant advance of the register Wheel.

21. In a machine 'of the character described, the combination of a register Wheel, a gear engaged therewith, a continuously rotating shaft, a spring tensioned by said shaft and tending to advance said register wheel,

a ratchet on the latter, a payvl normally engaging said ratchet to restrain the spring, depressible keys for displacing the pawl and variously limiting the resultant advance of 10e the register Wheel and detents for temporarily holding the keys depressed, with profv Bisions for disabling any detent by the rack ar. v

22. In a machine of the character described, the combination of a register Wheel,

a continuously rotating shaft,a gear loosely mounted thereon, a spring connected with the shaft and frictionally engaged with the said gear, a ratchet on the latter, a pawl normally engaging said ratchet'to restrain the spring, depressible keys for displacing the pawl and variously limiting the result-- ant advance of the register Wheel, and detents for temporarily holding the keys depressed, With provisions for disabling any detent by the rack bar. l

23. In a machine of the character described, the combination of a register wheel,

a gear engaged therewith, a continuously rotating shaft, a spring tensioned by said shaft and tending to advance said registerv wheel,

a ratchet on the latter, a paWl normally engaging said ratchet to restrain the spring,

a rack bar normally disengaged from the.,1 25 gear, depressible keys adapted to displace said paWl, engage the rack bar'vvith the gear the register wheel, and detents for tempoand variously limit the resultant advance of isions for disabling any detent the rack 24. In a machine ofthe character dey scribed, the combination of a register wheel,

a continuously rotating shaft, a gear loosely mounted thereon, a spring co11necte \vith the shaft and frictionally engaged with the said gear, a ratchet on the latter, a pawl. nor- ,mally engaging said ratchet to restrain the spring, a rack bar normally disengaged from the gear, depressible keys adapted to ,displace said pawl, engage the rack bar with the gear and variously limit the resultant advance of the register wheel, and detents for temporarily holdingv the keys depressed, with provisions for disabling any detent by the rack bar.l i

25. In a machine of the character described, the combination of a register Wheel, a gear engaged therewith, a continuously rotating shaft, a spring tensioned by said shaft and tending to advance said register wheel, a ratchet on the latter, a pawl normally engaging said ratchet to restrain the spring, depressible keys for displacing the pawl and variously limiting the result-ant advance of the register wheel, detents for teinporarily holding the keys depressed, with provisions for disabling any detent by the rack bar, and means for restoring the rack bar to.normal afterdisengagement from the gear by the restoration of the depressed key.

26. In a machine of the character described, the combination of a register Wheel, a continuously rotating shaft, a gear loosely mounted thereon, a spring connected with the shaft and frictionally engaged with the said gear, a ratchet on the latter, a pawl normally. engaging said ratchet to restrain the spring, .depressible-keys for displacing the pawl and variously limiting the resultant advance of the register wheel, detents for temporarily holding the keys depressed,

with provisions Yfor disabling any detent by the rack bar, and means for restoring the rack bar to normal after disengagement from the gear by the restoration of the depressed key.

27. In a machine lof the character described, the combination of a register wheel,

a. gear engaged therewith, a continuously rotating shaft, a sprin tensioned by said shaft and tending to a vance said register wheel, a ratchet on the latter, a pawl normally engaging said ratchet to restrain the spring, a rack bar normally disengaged from the gear, depressible keys adapted to displace said pawl, engage the rack bar with the gear and variously limit the resultant advance of the register wheel, detents for temporarily holding the keys depressed, with provisions for disabling any detent by the rack bar, and means for restoring the rack bar to normal after disengagement ysaid gear, a ratchet on the latter, a pawl normally engaging said ratchet to restrain the spring, a rack bar normally disengaged from the gear, depressible keys adapted to displace said pawl, engage the rack bar with the gear and variously limit the resultant advance of the register wheel, detents for temporarily holding thekeys depressed,

with provisions for disabling any detent by the rack bar, and means for restoring the rack bar to normal after disengagement from the gear by the restoration of the depressed key.

29. In a machine of the character' described, the combination of a register wheel, a gear engaged therewith, a continuously rotating shaft, a spring tensioned by said shaft" and tending to advance said register wheel, means normally restraining said gear, a rack bar normally disengaged from the gear, a bell crank lever connected with said rack bar, a longitudinally movable strip or bar connected with said bell crank lever, and a series of depressible keys adapted to move said strip or bar and thereby engage the rack with the gear, said keys adapted to disable said restraining means and variously'limit the resultant movement of the rack bar, the gear and the register wheel.

30. In a machinet of the character described, the combination of a register wheel, a gear engaged therewith, a continuously rotating shaft, a spring tensioned by said shaft and tending to advance said register wheel, means normally restraining said gear, a rack bar normally disengaged from the gear, a bell crank lever connected with said rack bar, a longitudinally movable strip or bar connected with said bell crank lever and equipped With studs, and a series of depressible keys having cam-portions for engaging said studs to move said strip or bar vand thereby engage the rack with the gear,

said keys adapted to disable said restraining means and variously limit the resultant movement of the rack bar, the gear and the register wheel.

31. In a machine of the character described, the combination of a register Wheel, a gear engaged therewith, a continuously rotating shaft, a spring tensioned by said shaft and tending to advance said register wheel, a ratchet on the latter, a pawl nor` mally engaging said ratchet to restrain the spring, a bell crank lever connected with said rack bar, alongitudinally movable strip or bar connected with said bell crank lever, a

. said bell crank Y prevent series of depressible keys adapted to move said strip or bar4 and thereby engage the rack with fthe gear, said keys adapted to variously limit the movement of the rack bar, and an operating connection between lever and the pawl whereby the latter is displaced when a key is depressed.

32. In a machine of the character described, the combination of a register or counter, a continuously rotating shaft, means interposed between the same and the register constantly tending to advance the latter but normally restrained from so doing, a longitudinally movable bar adapted to be engaged with /and disengaged from said means, and having` a series of'stop projections, depressible keys for removing the restraint to operation of ysaid means and engaging said bar therewith, said keys extending in a series adjacent said bar and adapted when depressed to present abutments to the stop projections thereof, and detents for said keys to temporarily hold them down, with provisions for displacement of the detents bythe stop projections.

33. In a machine of the character described, the combination of a register or counter, a continuously rotating shaft, means interposed between the same and the register constantly tending to advance the latter but normally restrained from so doing, a longitudinally movable bar adapted to be engaged with and disengaged rom said means, and having a series of stop projections, depressible keys for removing the re-- straint to operation of said means andengaging saidbar therewith, said keys extending in a series adjacent said bar and adapted when depressed to present abutments to the stop projections thereof, and detents for said keys -to temporarily hold them down, said detents having cam lugs against which the stop projections act to Vdisplace the detents.

34. In a machine of the character described,l the combination of register wheels carrying planet gears, a series of pairs of gears engaged respectively therewith, keycontrolled means for operating corresponding gears of said pairs, ratchets on the other gears of said pairs, pawls spring-drawn to advance said ratchets, cams on lower denomination register wheels to retract said pawls, restraining pawls engaging said ratchets, and tie-platesconnecting the actuating pawls and the restraining pawls, slotted to permit displacement of the latter during actuation of wheels by the former but advance of the ratchets independently of the pawls.

35. In a machine of the character described, the combination of register wheels, transfer mechanism, means constantly tend-l ing. to individually advance said wheels but normally restrained, keys for removing such restraint and variously limiting the resultant advance of the wheelsfand means for removing the restraint independently of the keys and setting a zero stop for the lowestregister wheel and stops.for the other wheels to limit their advance to a step short of the zero position.

86. In a machine of the character de'- scribed, the combination of register wheels, transfer mechanism, means constantly tending to individually advance said wheels but normally restrained, keys for removing such restraint and variously limiting the resultant advance of the wheels, and means for removing the restraint independently of the keys and setting a zero stop for the lowest register wheel and stops for the other wheels to limit their advance to a step short of the zero position, with provisions for advancing the next to the lowest wheel one step without requiring precedent movement of the lowest wheel.

37. In a machine of the character described,the combination of a series of denominational' register wheels having zero positioning stop projections, transfer devices fdr automatically advancing one step at a time a wheel of higher denomination upon the next lower wheel advancing to Zero position, means constantly ytending to individually advance said wheels but normally restrained, keys for removing such restraintand variously limiting the resultant advance of the.

wheels, and means for removing the restraint independently of the keys and interposing obstructions in the paths of the said stop projections onthe wheels, the lowest wheel being permitted to advance to' the zero position while higher wheels are limited to a step short of Zero position.

38. In a machine of the character described, t-he combination of a series of denominational register wheels having zero positioning stop proj ections,transfer devices for automatically advancing one step at a time a wheel of higher denomination upon the next lower wheel advancing to zero position, means constantly tending to individually advance said wheels but normally,Y

restrained, keys for removing such restraint and variously limiting the resultant advance of the wheels, and a manipulative rock shaft equipped to remove the restraint independently of the keys, and having arms to enter the paths of the said stop projections on the wheels, the lowest wheel being permitted to advance to the zero position while higher wheels are limited to a step short of zero position.

39. In a machine of the character described, the combination of a series of denominational register wheels having f zero positioning stop projections, transfer devices for automatically advancing one step at a time a wheel of higher denomination upon` 25 tion,

and variously limiting the resultant advance of the wheels, a manipulative rock shaft equipped to remove the restraint independently of the keys, and having arms to enter the paths of the said stop projections on the wheels, the lowest wheel being permitted to advance to the Zero position while higher wheels are limited to a step short of zero position, and connections between said rock shaft and the transfer devices associated with the lowestwheel, for effecting the onestep advance of the next higher wheel without precedent advance of said lowest wheel.

40. In a machine of the character described, the combination of a series of denominational register wheels having Zero positioning stop projections, transfer devices `for automatically advancing one step at a time a wheel of higher denomination upon the next lower wheel advancing to zero posigears for individually advancing said wheels, springs tending to turn said gears, a continuously rotating shaft tensioning said springs, ratchets carried by said gears, pawls engaging said ratchets, racks normally disengaged from the gears, .longitudinally mov-V able bars operativel-yconnected with said racks and said pawls, rows of depressible keys for moving said bars and thereby displacing the pawls and engaging the racks with the gears, said keys adapted to variously limit the resultant advance of the racks, a manipulative rock shaft having projections engaging said bars and arms for interposition 1n the paths of thestop projections on the wheels to hold the lowest wheel at zero and the others one step short of zero, and connections between said rock shaft and the transfer devices associated with the lowest wheel, for effecting the one-step advance of the next higher wheel without precedent advance of said lowest wheel.

4l. In a machine of the character described, the combination of a series of denominational register wheels having zero positioningA stop projections, transfer devices for automatically advancing one' step at a time a wheel of higher denomination upon the next lower whee advancing to zero position, said devices including ratchets and actuating pawls therefor, gears for individually advancing said wheels, springs tending to turn said gears, a continuously rotating shaft tensioning said springs, ratchets carried by said gears, pawls engagingvsaid ratchets, racks normally disengaged from the gears, longitudinally movable bars operatively connected with said racks and said pawls, rows of depressible keys for moving said bars and thereby displacing the pawlsA and engaging the racks with the gears, said keys adapted to variously limit the resultantadvance of the racks, a manipulative rock shaft having projections engaging said bars and arms for interposition in the paths of the stop projections on the wheels to hold the lowest wheel at zero and the others one step short of zero, and a link cranked to said rock shaft and connected with the JESSE G. VINCENT.

Witnesses:

R. S. MIELERT, A. J. LAUVER. 

